This is getting out hand.
First, X network transparency is not used just by sysadmins. At my university it's used every day by students who ssh into lab computers and run X software. They're not sysadmins. Many aren't even power users. They just know that if they ssh from their laptops (be it Mac OS X or Windows with an X server installed), they can simply run an app and it works. They don't care if it's slightly more smoothy drawn; they just want to get their work done. This guy's girlfriend (who doesn't even know what X is) X forwards Thunderbird from her desktop to her laptop. One of the libraries in the Australian Museum in Sydney has (or had, I haven't been there in a while) a row of thin clients which X forward web browsers from a server in some back room. These are real world examples of non-sysadmins using X forwarding.
But I don't really care if it's sysadmins or non-sysadmins using this. The fact is, the people behind Wayland are removing functionality from a very core part of a Linux system, largely so they can provide slightly prettier graphics. This is not a tradeoff that should be made for any feature, whether it's used by sysadmins, or scientists, or writers, or artists.
And it's not true that X will always be there. X is being kept around solely to help the transition. What do all these people do once apps start becoming Wayland-only?